Objective Caml (OCaml) is an implementation of the ML language,
based on the Caml Light dialect extended with a complete
class-based object system and a powerful module system in the
style of Standard ML.

CamlP4 is a Pre-Processor-Pretty-Printer for Objective Caml. It
offers tools for syntax (Stream Parsers and Grammars) and the
ability to modify the concrete syntax of the language
(Quotations, Syntax Extensions).

This package contains the basic CamlP4 executables and libraries
for pre-processing and pretty-printing OCaml sources both
interactively and in a batch fashion.